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Latest Technical Method Tutorial for Preventing and Treating Low-Temperature Injury in Cucumbers
Low-Temperature Injury in Cucumbers Because cucumbers have a relatively weak tolerance to low temperatures, continuous low temperatures can trigger a variety of symptoms, mainly manifested in the following aspects: 1. When the soil temperature at sowing is too low, seed germination and seedling emergence are delayed, resulting in yellow, weak seedlings, rotted seeds, or the occurrence of damping-off disease, root rot, and so on.
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How to prevent and control low-temperature freezing injury in napa cabbage? A full analysis of the latest measures
After Frost's Descent, temperatures drop sharply. For early-planted autumn cabbage, the continuous harvest period has now arrived, while for late-planted cabbage, work to prevent low-temperature freezing injury must be done well at this time, otherwise it is highly likely to cause large-scale
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How to prevent and control low-temperature injury in eggplant? A detailed guide to the latest methods
During seedling raising or early and late cultivation of eggplant, it often suffers from chilling injury and freezing injury, and we call this phenomenon low-temperature injury. It can seriously affect the growth and development of eggplant and also cause a serious impact on later yield, so
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Latest Technical Guide to the Prevention and Control of Cold Injury and Freezing Injury in Cucumbers
In greenhouse cucumber cultivation during autumn, winter and early spring, because the air temperature is cold, cold injury and freezing injury are extremely prone to occur. In early spring the leaves turn yellow and growth is damaged, and in severe cases the plants wilt and die. So how should cold injury and freezing injury be prevented and controlled? Follow the editor to learn about it.
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How to Prevent Chilling Injury in Cowpeas? A Full Guide to Remedies
After entering March, temperatures gradually rise, but cold air also appears from time to time, bringing sharp drops in temperature. In this situation, if vegetable production management is not strict, crops are very likely to suffer chilling injury or even be frozen to death directly, greatly affecting yield. Below, the editor
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A Detailed Guide to the Latest Control Methods for Cold Temperature Injury in Corn
Corn is a warmth-loving crop with relatively high temperature requirements. In some years, because temperatures are relatively low, corn often suffers from low-temperature chilling injury. Encountering low temperatures during the sowing and emergence stage causes delayed emergence, weak seedlings, and reduced seed germination rates. This phenomenon
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How to treat external injuries in farmed masked palm civets
Masked palm civets are often kept in groups, where fights and bites frequently occur, leading to external injuries. If external injuries are not discovered and treated in time, they will cause infection and suppuration. Clinical symptoms: (1) Fresh wounds show split skin and flesh, bleeding, pain, and dysfunction of tissues and organs; in severe cases,
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What to Do About Herbicide Injury to Cucumber Seedlings? Remedies and Preventive Measures
Pesticides are one of the products commonly used during crop cultivation and have greatly promoted agricultural development. However, during use, problems with phytotoxicity always arise for various reasons. So, what should be done about phytotoxicity in cucumber seedlings? 1.
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Methods for controlling freeze injury in sweet potato cultivation
Sweet potato freeze injury, also called hard-heart sweet potato. [Disease diagnosis] When storage roots are frozen, at first the skin color shows no obvious difference from healthy roots, only slightly losing its luster. Later, the skin can be seen to take on a slightly dark, lusterless appearance; pressing the frozen part lightly with a finger gives a springy feeling; cutting open a frozen sweet potato shows that the flesh near the skin rapidly turns brown, does not exude white milky sap, and squeezing it by hand releases clear water. Generally, based on the speed at which the flesh turns brown, the degree of freezing can be estimated; the faster the browning, the more severe the freezing. Frostbitten storage roots often form a hard heart, taste bitter, and will not cook soft. After storage roots are frozen, they are easily attacked by weakly parasitic fungi, causing rot. ⟦4 <p>Sweet potato freeze injury, also called hard-heart sweet potato. </p><p></p><p>[Disease diagnosis] When storage roots are frozen, at first the skin color shows no obvious difference from healthy roots, only slightly losing luster. Later, the skin can be seen to take on a slightly dark, lusterless appearance; pressing the frozen part lightly with a finger gives a springy feeling; cutting open a frozen sweet potato shows that the flesh near the skin rapidly turns brown, does not exude white milky sap, and squeezing it by hand releases clear water. Generally, based on the speed at which the flesh turns brown, the degree of freezing can be estimated; the faster the browning, the more severe the freezing. Frostbitten storage roots often form a hard heart, taste bitter, and will not cook soft. After storage roots are frozen, they are easily attacked by weakly parasitic fungi, causing rot. </p><p>[Cause] When storage roots are exposed to a low-temperature environment below 9°C for a relatively long time, their physiological functions are disrupted, the flesh tissue is frostbitten, a hard core forms, and the skin and tissue become necrotic. However, after freezing, a period of time must pass before rotting begins. The lower the temperature, the more severe the freeze injury. The longer the low temperature lasts, the more severe the freeze injury. When storage roots suffer freeze injury, rotting generally has two peaks: one is when harvesting is too late in production and the roots freeze in the field, called freeze injury outside the storage pit, and rotting begins about 15 days after being put into the pit; the other is during the middle and late stages of pit storage, when freezing occurs because the pit is shallow or cold protection and insulation are poor and the pit temperature is low, followed by rotting. Generally, at 4-5°C, rotting begins after lasting half a month, and at 6-7°C, rotting occurs only after 1 month. </p><p>[Control measures] (1) Harvest and put into the pit at the proper time to prevent storage roots from freezing. The suitable harvest time for sweet potato should be when the local average temperature of the ten-day period drops to about 14-15°C. Harvest promptly on a sunny day, and the storage roots should be put into the pit on the day of harvest. (2) Disinfect the storage pit. Before the storage roots are put into the pit, a layer of soil should be scraped from the walls of an old pit, and then chemicals should be used for disinfection: fumigate with 30-40 milliliters of 402 water-based fungicide per cubic meter of space, or spray the walls around the pit with a 50-fold formalin solution; in either case, it must be sealed for two days, then opened for ventilation, and used after another two days. (3) Carefully select storage roots. Any storage roots that are diseased, insect-bitten, or frostbitten by frost should be removed and must not be put into the pit. (4) During harvesting, transport, and pit storage, handle them carefully, lifting and setting them down gently, and prevent wounds as much as possible. (5) Manage the temperature and humidity of the storage pit well. To prevent storage roots from freezing and ensure safe storage, the pit temperature should be kept at 11-13°C and the relative humidity at 75%-80%.</p>
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How to prevent frost damage in plum trees? Key technical points for frost prevention when growing plum trees
Frost injury and freeze damage refer to the phenomenon in which the soil and plant surface temperatures drop to 0°C or below 0°C for a short time at night during the growing season, or when frost occurs, causing damage to the young and tender parts of fruit trees. In China, the average annual area affected by frost damage reaches 340,000 km2, and in the worst year it reached 7
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